baber/WOPTO huggingface dataset:
Patent WO-2018010493-A1 (WO)
Title: 一种人造草坪中空颗粒的制造装置
Inventor: ZHU JIANGFENG
IPC: B29C48/885
Filed: 2017-05-24
Abstract: 一种人造草坪中空颗粒的制造装置，包括挤出机（1）、冷却装置（2）、输送装置（3）和切粒机（4）；挤出机（1）、冷却装置（2）、输送装置（3）和切粒机（4）依次连接；挤出机（1）包括喂料机（11）、真空排气装置（12）和模头（13）；真空排气装置（12）通过插管与喂料机（11）相连接；模头（13）安装在真空排气装置（12）上；模头（13）包括壳体（131）、流道（132）和加热件（133）；流道（132）和加热件（133）均安装在壳体（131）的内部；加热件（133）安装在流道（132）的侧壁上；流道（132）的入料端与真空排气装置（12）的出料口连通；流道（132）的出料端设有出料嘴（1321）；出料嘴（1321）中设有嵌块（13211）；该装置可直接生产出空心的颗粒。
Patent WO-2017211236-A1 (WO)
Title: Matériaux zéolitiques activés par le cuivre de la structure de cadre cha issus d'une synthèse sans modèle organique, et leur utilisation en réduction catalytique sélective de nox
Inventor: MAURER STEFAN
IPC: C01B39/00
Filed: 2017-06-02
Abstract: L'invention concerne un matériau zéolitique contenant du cuivre et/ou du fer synthétique ayant une structure de cadre CHA, la structure de cadre CHA comprenant SiO  2 , X  2 O  3 , et comprenant éventuellement Z  2 O  5 , X étant un élément trivalent, et Z étant un élément pentavalent, le matériau zéolitique contenant de 3,8 à 12 % en poids de Cu et/ou Fe calculé en tant qu'élément respectif et sur la base de 100 % en poids de SiO 2  contenu dans le matériau zéolitique ayant une structure de cadre CHA, et le NMR MAS  29 Si du matériau zéolitique comprenant : un premier pic (P1) dans la plage allant de -96 à -98,8 ppm ; un deuxième pic (P2) dans la plage allant de -102 à -104,5 ppm ; et un troisième pic (P3) dans la plage allant de -107,5 à -111 ppm ; l'intégration des premier, deuxième et troisième pics dans NMR MAS  29 Si du matériau zéolitique offrant un rapport des valeurs d'intégration P1:P2:P3 allant de (0,35-0,7):1: (0,1-1,6), ainsi que son procédé de préparation et son utilisation, notamment dans un procédé pour la réduction catalytique sélective de NO x .
Patent WO-2018205331-A1 (WO)
Title: 电动汽车的自循环充放电装置和动力总成系统
Inventor: WU XIONGLIANG
IPC: B60L50/15
Filed: 2017-06-09
Abstract: 一种电动汽车的自循环充放电装置，包括发电机、充放电切换配电模块、第一电池组、第二电池组和电机驱动器和充放电管理单元，充放电管理单元输出第一和第二放电管理指令，选择第一电池组或第二电池组放电，且输出第一和第二充电管理指令，决定是否对第一电池组和第二电池组充电；第一电池组具有第一电池管理单元，根据第一充电管理指令控制充放电切换配电模块到第一电池组的充电路径通断，且根据第一放电管理指令控制第一电池组到电机驱动器的放电路径通断，第二电池组具有第二电池管理单元，根据第二充电管理指令控制充放电切换配电模块到第二电池组的充电路径通断，且根据第二放电管理指令控制第二电池组到电机驱动器的放电路径通断。
Patent WO-2019000353-A1 (WO)
Title: Use of fiber-optic immunosensor in environment detection
Inventor: XIE YUE
IPC: G01N21/17
Filed: 2017-06-30
Abstract: A use of a fiber-optic immunosensor in environment detection. The principle of immunity is utilized to evaluate the concentration of pollutants in environment by using the combined strength of an antigen and an antibody, and the pollutants can be heavy metals. The use of the fiber-optic immunosensor in environmental detection has high sensitivity and strong specificity.
Patent WO-2019010635-A1 (WO)
Title: Signal detector and signal detection method
Inventor: LIU ZHENZHE
IPC: A61B5/05
Filed: 2017-07-11
Abstract: Provided are a signal detector and a signal detection method. The signal detector comprises: a radio frequency (RF) signal generator (11) for generating an RF signal; an RF antenna (12) for exciting an alternating electric field according to the input RF signal, and receiving an electric field disturbance signal, wherein the electric field disturbance signal is an amplitude modulation signal generated by means of the alternating electric field being disturbed by a vibration signal on a skin surface to be detected, and the amplitude of the vibration signal on the skin surface to be detected is modulated onto the alternating electric field; and an amplitude modulation envelope detector (13) for demodulating the vibration signal on the skin surface to be detected from the electric field disturbance signal. The technical problems in the related art of complex measurement and inconvenient use occurring when the physiological activities of tissues are measured are solved.
Patent WO-2019000540-A1 (WO)
Title: Material assembly and forming method and assembly method thereof, and speaker device module
Inventor: ZHU MINGHANG
IPC: H04R31/00
Filed: 2017-07-27
Abstract: Disclosed are a material assembly and a forming method and an assembly method thereof, and a speaker device module. The material assembly comprises: a base membrane having a through hole; a double-sided adhesive tape adhered to the base membrane; a soft material member having a cross-section area greater than a cross-section area of the through hole, the soft material member being attached to one side surface of the base membrane by means of the double-sided adhesive tape and covering the through hole; a hard material supporting member positioned inside the through hole and adhered to one surface of the double-sided adhesive tape away from the soft material member. The present invention solves a problem in the prior art in which manual assembly of soft material members has low efficiency.
Patent WO-2018028516-A1 (WO)
Inventor: LIN NIZI
IPC: B65G37/00
Filed: 2017-08-04
Abstract: A conveyor belt transport device utilized in pipeline transport employs a liquid (4) in a pipeline to produce a water channel buoyant force or a flow impact force to optimize a transport operation of a conveyor belt. The conveyor belt transport device comprises: a conveyor belt (10), a conveyor belt driving mechanism (1), a conveyor belt fastening mechanism, a feeding mechanism, and a transport pipeline (2) containing the liquid (4). Entrances of the conveyor belt fastening mechanism, the feeding mechanism and the transport pipeline (2) are adjacent to each other. The feeding mechanism is used to uniformly dispense materials on the conveyor belt (10) and at a controllable dispensing speed. Fastening structures corresponding to each other are disposed at two sides of the conveyor belt (10). When the conveyor belt (10) passes through the entrance of the transport pipeline (2), the conveyor belt fastening mechanism closes the conveyor belt (10) to form a tubular conveyor belt (3) having a sealed or semi-sealed tube wall. When the tubular conveyor belt (3) enters the transport pipeline (2), the buoyant force or flow impact force produced by the liquid (4) in the pipeline facilitates a transport operation. The transport device combines advantages of pipeline transport and conveyor belt transport, and can quickly construct a conveyor belt in a pipeline.
Patent WO-2019033287-A1 (WO)
Title: Storage rack
Inventor: GE ZHIQIANG
IPC: A47B47/00
Filed: 2017-08-16
Abstract: A storage rack. The storage rack comprises four upright support columns (1) and several horizontal storage plate frames (2) provided between the four support columns (1), and a storage plate (3) is correspondingly placed above each storage plate frame (2). The storage plate frame (2) comprises two first beams (5) and two second beams (6); providing a horizontal crimping (10) at an edge position of the first beam (5) facilitates improving supporting strength of the first beam (5), and providing a horizontal crimping (14) at an edge position of the second beam (6) facilitates improving supporting strength of the second beam (6); because the supporting strength of the first beam (5) and that of the second beam (6) are improved, the supporting strength of the storage plate frame (2) is improved, and thus the supporting strength of the storage rack is improved. In addition, the support column (1) consists of one or more standing columns (4), and respectively providing an upright crimping (23) at an edge position of each standing column (4) facilitates improving supporting strength of the standing column (4). Moreover, designing the horizontal crimpings (10, 14) and the upright crimpings (23) further improves the supporting strength of the storage rack.
Patent WO-2019041148-A1 (WO)
Title: Concentric common-battery electromagnetic device
Inventor: HSU YUNG-SHUN
IPC: H02K1/06
Filed: 2017-08-30
Abstract: A concentric common-battery electromagnetic device, which consists of at least two magnetic column groups (10), at least one coil column group (30) provided parallel and between the opposite magnetic column groups (10), and at least one inductive switch group (40). The magnetic column groups (10) consist of first and second magnetic elements (11 and 12) magnetizing in the direction of motion and provided with a magnetic gap (15). The coil column group (30) consists of at least one coil element (31). Each coil element (31) is provided with a magnetic conductor (32). The length of the magnetic conductor (32) is the length of either magnetic element (11 and 12) plus that of one magnetic gap (15). Moreover, the magnetic conductor (32) is provided at a departing extremity side corresponding to the direction of motion with an electricity supplying coil (36) connected to a power supply and an inductor coil (38) connected to a load. The inductive switch group (40) is capable of controlling whether electricity is supplied by the electricity supplying coil (36) of the coil column group (30) or not. As such, the goal of increasing the rotational speed throughout an entire process is achieved, thus further increasing output power and generated electricity, increasing the energy conversion efficiency, and allowing the structure to be fully utilized.
Patent WO-2018041139-A1 (WO)
Inventor: WANG XIAODONG
IPC: H04L29/06
Filed: 2017-08-30
Abstract: L'invention concerne un procédé et un système anti-contrefaçon basés sur une réponse active pour un dispositif de communication optique. Le procédé anti-contrefaçon comprend les étapes suivantes : un premier serveur reçoit, d'un appareil de capture d'image d'un utilisateur, une demande d'authentification concernant un dispositif de communication optique devant être authentifié, la demande d'authentification contenant des informations d'identification du dispositif de communication optique ; le premier serveur détermine le dispositif de communication optique correspondant aux informations d'identification ; le premier serveur génère un code de vérification en réponse à la demande d'authentification ; et le premier serveur transmet le code de vérification à l'appareil de capture d'image et au dispositif de communication optique correspondant aux informations d'identification, et commande au dispositif de communication optique correspondant aux informations d'identification de présenter le code de vérification. De la sorte, l'utilisateur peut vérifier l'authenticité du dispositif de communication optique devant être authentifié, sur la base des informations obtenues lors de l'utilisation de l'appareil de capture d'image pour capturer une image du dispositif de communication optique devant être authentifié, et du code de vérification reçu par le dispositif de capture d'image.
Patent WO-2018059544-A1 (WO)
Inventor: LIU BINGBING
IPC: B32B7/12
Filed: 2017-09-29
Abstract: Provided are a solvent-free two-component type adhesive capable of guaranteeing a practical packaging property, with an excellent curing property and significantly shortening aging time, a laminated film using the same, and a polyol composition for an adhesive. An adhesive, characterized in comprising a polyisocyanate composition (X) containing a polyisocyanate (A), and a polyol composition (Y) containing a polyol (C) and a tertiary amine compound (B) having multiple hydroxyl groups, as necessary components.
Patent WO-2018233177-A1 (WO)
Title: Embedded manhole cover
Inventor: YANG JIANPING
IPC: B63B19/16
Filed: 2017-10-31
Abstract: An embedded manhole cover, comprising: a mounting base (2) fixed in a manhole of a deck (1), and a cover body (3) detachably provided on the mounting base (2). A press plate assembly for covering a gap between the deck (1) and the cover body (3) is provided on the cover body (3). The press plate assembly comprises an annular press plate (4) and a fastener for detachably fixing the press plate (4) on the deck (1). When the press plate (4) and the cover body (3) are fixed, one side of the press plate (4) in the width direction is abutted against a first floor glue (5) provided on the cover body (3), and the other side is abutted against a second floor glue (6) provided on the deck so that the first floor glue (5) is compressed on the cover body (3). The embedded manhole cover is simple in structure and convenient to open/close, can not only guarantee effective connection between the manhole cover and the floor glue and the aesthetic degree of a channel, but also reduces the construction difficulty.
Patent WO-2018161620-A1 (WO)
Title: 一种静脉穿刺装置、系统及静脉穿刺控制方法
Inventor: WANG YANQING
IPC: A61M25/00
Filed: 2017-11-01
Abstract: 一种静脉穿刺装置（1）、系统及静脉穿刺控制方法，该系统包括：控制装置（2）和静脉穿刺装置（1）；静脉穿刺装置（1）和超声波探头（13）分别与控制装置（2）连接；静脉穿刺装置（1），用于通过超声波探头（13）采集预选靶血管的数据信息，并发送至控制装置（2）；控制装置（2），用于根据数据信息计算靶血管的位置信息，根据位置信息生成控制信号；静脉穿刺装置（1）还用于，根据控制信号控制自身固定的待穿刺针体（5）和待置入软管穿刺皮肤。该装置及系统整体造价相对机器人医疗系统成本低；能够自动控制静脉穿刺装置（1）进行进针、置管和退针的动作，减少了操作者的劳动强度；且与超声波探头（13）相配合，在超声波探头（13）的引导下，定位精度高；可实现单手操作，对操作者的经验要求降低且能适应动态环境。
Patent WO-2019015182-A1 (WO)
Title: Direct current voltage conversion circuit and liquid crystal display device
Inventor: ZHANG XIANMING
IPC: H02M3/156
Filed: 2017-11-15
Abstract: Provided are a direct current voltage conversion circuit and a liquid crystal display device. The direct current voltage conversion circuit comprises a voltage-dividing unit (100), a voltage conversion unit (200), a first subtractor (310), an adder (320), a second subtractor (330), and a pulse width modulation unit (400). If a voltage outputted from an output end of the second subtractor (330) is less than or greater than a preset voltage difference value, the pulse width modulation unit (400) correspondingly adjusts a duty cycle of a pulse signal outputted therefrom, such that the outputted voltage and a feedback voltage increase or decrease until the voltage outputted from the output end of the second subtractor (330) is equal to the preset voltage difference value. Accordingly, an outputted voltage of the direct current voltage conversion circuit is increased when a current outputted from the direct current voltage conversion circuit increases, and an outputted voltage of the direct current voltage conversion circuit is decreased when a current outputted from the direct current voltage conversion circuit decreases, thereby ensuring that an electric element connected to the direct current voltage conversion circuit receives a consistent voltage, and improving product quality.
Patent WO-2018209916-A1 (WO)
Title: 新波长双包层掺镱光纤及制备方法
Inventor: YAN LEI
IPC: G02B6/036
Filed: 2017-11-20
Abstract: 一种新波长双包层掺镱光纤(11)及制备方法，该方法包括以下步骤：采用MCVD，通入原料，在石英反应管内壁沉积第一层SiO2疏松层；采用溶液浸泡法，进行稀土离子掺杂，通过注液管，将溶液灌入石英反应管中有疏松层结构的区域；将石英反应管竖立后旋转，溶液浸泡一段时间；停止旋转，在石英反应管下方进行微创切割，使液体流出；将溶液浸泡后的SiO2疏松层烧结，沉积第二层SiO2疏松层，重复上述液相掺杂、烧结步骤一次；将石英反应管熔缩成实心棒，得到芯棒，再拉丝，得到新波长双包层掺镱光纤(11)。新波长双包层掺镱光纤(11)能够降低激光器的量子亏损，提高效率，减少热问题。
Patent WO-2018233204-A1 (WO)
Title: Three-dimensional wound core open dry-type transformer coil structure and winding method therefor
Inventor: XU KAIXUAN
IPC: H01F27/28
Filed: 2017-11-24
Abstract: A three-dimensional wound core open dry-type transformer coil structure and a winding method therefor. The three-dimensional wound core open dry-type transformer coil structure comprises a three-dimensional wound core, an insulating cylinder disposed outside the three-dimensional wound core, and a coil winding wound onto the insulating cylinder. The coil winding is formed by winding insulating wires (1); comb-shaped supporting bars (2) are uniformly disposed outside the insulating cylinder; the insulating wires (1) are wound around racks (21) of the comb-shaped supporting bars (2); coil taps (11) are connected to the coil winding; the coil taps (11) are led out onto the surface of the coil winding; the head end of the coil winding and the part of the coil winding leading out the coil taps (11) are wound into forward and reverse hybrid coils (12), and the remaining parts are fully forward coils (13). By means of the comb-shaped supporting bars (2), a large number of cushion block materials can be saved, so that the heat dissipation capacity of the coils can be greatly improved; the coil winding is manufactured into a continuous coil structure combining the fully forward coils (13) and the forward and reverse hybrid coils (12) to ensure that all the heads, tails and taps (11) of the coils can be led out on the surface, and process complexity due to leading of the coil taps (11) out of the interior of the coils can be avoided.
Patent WO-2019000845-A1 (WO)
Title: Light collector, light emitting device, and projection light source
Inventor: XU MENGMENG
IPC: G03B21/20
Filed: 2017-12-06
Abstract: Provided are a light collector (2), a light emitting device, and a projection light source. The light collector (2) has a light emergent surface (212), a light incident surface (211, 213), and a side surface (214) opposite the light emergent surface (212). The light collector (2) has a stacked multilayer structure. The multilayer structure comprises at least one core layer (20) located at the center and a cladding layer (21, 22) stacked on two sides of the at least one core layer (20). Light having a first wavelength distribution can penetrate the cladding layer (21, 22), and the at least one core layer (20) can convert the light having the first wavelength distribution into a light having a second wavelength distribution. The side surface (214) is provided with a light blocking element for preventing light leakage, wherein an area of the light incident surface (211, 213) is greater than that of the light emergent surface (212). The light emitting device and the projection light source are provided with the light collector (2) and a light source (11). The invention can suppress a drastic change in the temperature of the light collector (2), thereby preventing a device fault caused by a drastic change in an internal temperature. Furthermore, the invention provides a more even distribution of the thermal field inside the light collector (2), reducing thermal effects.
Patent WO-2019007000-A1 (WO)
Title: Auxiliary bamboo thermal bending device
Inventor: ZHANG LI
IPC: B27H1/00
Filed: 2017-12-21
Abstract: An auxiliary bamboo thermal bending device. One end of bamboo (14) which is thermally bent in advance is fixed by means of a first fixing assembly, and the other end of the bamboo (14) which is thermally bent in advance is fixed by means of a second fixing assembly, wherein the second fixing assembly and the first fixing assembly are positioned in the same vertical direction; then, the bamboo (14) fixed between the first fixing assembly and the second fixing assembly is heated while the second fixing assembly is controlled by a control assembly to move downwardly in a first guide rail (25)to apply a force to the bamboo (14), so that the bamboo (14) is bent in a vertical plane. The technical problem in the current bamboo bending method of bending point offset or inconsistent curvatures of bamboo as it is difficult to control the bending point when the bamboo is mainly bent manually, as well as the technical problem of low production efficiency, are solved.
Patent WO-2018176936-A1 (WO)
Title: 集成式显示面板、显示装置、图像显示方法
Inventor: FENG XIANG
IPC: H04N5/225
Filed: 2017-12-22
Abstract: 本公开的实施例公开了一种集成式显示面板、显示装置、图像显示方法，该集成式显示面板包括：显示基板以及多个位于显示基板的光电二极管；多个光电二极管的部分或全部被配置为采集目标区域的光信号，并将所采集到的目标区域的光信号转换成用于形成目标区域图像的电信号。
Patent WO-2018121607-A1 (WO)
Inventor: SONG CHUN
IPC: C07D409/12
Filed: 2017-12-27
Abstract: Disclosed are a benzo[b]thiophene amide derivative and the use thereof. In particular, the present invention relates to a benzo[b]thiophene amide derivative having a structure of formula (I) or a pharmaceutically acceptable salt thereof, and the use of the compounds in regulating the activity of the Smoothened receptor or Hedgehog pathway.
Patent WO-2018196448-A1 (WO)
Title: 导光组件及其制备方法、背光模组和显示装置
Inventor: HAO RUIJUN
IPC: G02B6/00
Filed: 2018-01-22
Abstract: 一种导光组件及其制备方法、背光模组和显示装置。导光组件包括：导光板（21），导光板（21）具有彼此相对的出光面（212）和背面（216），以及与出光面（212）和背面（216）相接的侧面（210）；第一反射层（22），第一反射层（22）设置于出光面（212）上，且具有多个透光孔（221）；设置于第一反射层（22）远离导光板（21）的一侧的扩散层（24），扩散层（24）包括板状体（241）和布置在板状体（241）表面的多个突起（242），多个突起（242）与多个透光孔（221）一一对应，且透光孔（221）容纳对应的突起（242）。
Patent WO-2018137588-A1 (WO)
Title: 媒体内容投放方法、装置、系统及存储介质
Inventor: WANG SHUGANG
IPC: H04L29/06
Filed: 2018-01-23
Abstract: 本申请公开了一种媒体内容投放方法，将新建排期下订单发送给DSP进行素材绑定，从DSP侧获得素材绑定消息，根据获得的素材绑定消息判断订单绑定的素材是否符合订单的要求，绑定的素材符合要求的订单在订单数据库中的状态更新为待投放后进行后续的投放处理。本申请还提出了相应的媒体内容投放装置、存储介质及媒体内容投放系统。
Patent WO-2019148418-A1 (WO)
Title: Method for increasing yield of extracellular polysaccharides of edible and medicinal fungus by adding phenylalanine
Inventor: DING ZHONGYANG
IPC: C12R1/645
Filed: 2018-02-01
Abstract: A method for increasing the yield of the extracellular polysaccharides of an edible and medicinal fungus by adding phenylalanine, which relates to the field of microbial fermentation. The present method comprises exogenously adding a certain amount of phenylalanine during a fermentation culture process of an edible and medicinal fungus liquid to increase the yield of the extracellular polysaccharides of the edible and medicinal fungus by 40%, wherein the polysaccharides of the edible and medicinal fungus may be efficiently and stably synthesized, providing a new direction for the study of the polysaccharides of edible and medicinal fungi and being beneficial for application in industrial production.
Patent WO-2019153110-A1 (WO)
Title: Method for transmitting key, receiving terminal, and distribution terminal
Inventor: TANG YINXI
IPC: H04L9/08
Filed: 2018-02-06
Abstract: The present invention relates to the field of data processing, and in particular, to a method for remotely transmitting a key, a receiving terminal, and a distribution terminal. In the present invention, a first authentication message is obtained according to the unique identifier of a receiving terminal and a first random character string; the first authentication message is sent to a distribution terminal, so that the distribution terminal verifies the validity of the receiving terminal according to the first authentication message; a second authentication message from the distribution terminal is verified to obtain a first verification result, the first verification result including verification pass and verification fail, and the second authentication message including the unique identifier of the distribution terminal, a second random string, a second MAC value, and a specific key ciphertext; and when the first verification result is the verification pass, the specific key ciphertext is decrypted to obtain a specific key plaintext. The efficiency of remote transmission of a key is improved.
Patent WO-2019165601-A1 (WO)
Inventor: MAO MENGDA
IPC: H04B17/00
Filed: 2018-02-28
Abstract: Disclosed are a method and device for detecting a standing wave, and a device having a storage function, the method comprising: generating a standing wave detection signal that periodically alternates between positive and negative; generating a transmitting signal after superimposing baseband signals; sending the transmitting signal through a transmitting channel; receiving a reflected signal generated by the transmitting signal during transmission, and periodically inverting the reflected signal; accumulating the periodically inverted reflected signal a preset number of times, such that the signal-to-noise ratio of a reflected signal of the standing wave detection signal and a reflected signal of the baseband signal in the accumulated reflected signals is greater than a preset threshold; and finally, utilizing the accumulated reflected signals to determine a system standing wave ratio. By means of the described method, the present application may improve the signal-to-noise ratio more quickly and improve the efficiency of standing wave detection.
Patent WO-2018166470-A1 (WO)
Title: 基于帧率的动画展示方法及终端设备
Inventor: CHEN XIANG
IPC: G06T13/80
Filed: 2018-03-14
Abstract: 本申请实施例公开了基于帧率的动画展示方法及终端设备。终端设备会实时地计算动画页面的当前帧率，然后根据动画页面未失帧时的正常帧率与正常偏移量的乘积及当前帧率，确定要展示的当前帧中相对于前一帧的操作的当前偏移量，使得根据该当前偏移量计算得到的动画页面中的操作的每秒总偏移量为正常帧率与正常偏移量的乘积或为某一固定值，并根据当前偏移量展示当前帧。
Patent WO-2018228007-A1 (WO)
Title: 一种新型一体式小臂破岩工具
Inventor: HU LING
IPC: E02F3/39
Filed: 2018-03-17
Abstract: 一种一体式小臂破岩工具，包括大臂（1）、小臂（2）、齿座（3）、中臂油缸（4），大臂（1）与小臂（2）铰接，中臂油缸（4）的缸体端与大臂（1）铰接，中臂油缸（4）的另一端与小臂（2）铰接，小臂（2）下部呈月牙形，齿座（3）设置在小臂（2）下端部。